Abstract: Presence of Harmonics, voltage & frequency variations deteriorates the performance of the system. Quality of Power supplied is affected by various factors of the power system. Most of the Power Quality problems are introduce in to the system by the Power Electronics equipment because of its fast switching and non-linear characteristics. In the market competition Power Quality issues b...

<p>The Power quality of the electrical system is an important issue for industrial, commercial, and housing uses. An increasing request high power number distorting loads had led to increase consideration by customers utilities. The development use flexible alternating current transmission (FACTs) controllers in systems many applications these controllers. A unified flow controller (UPFC)...